Book digitized by Google from the library of University of Michigan and uploaded to the Internet Archive by user tpb.
Reports for 1932/1933-1938/1939 are reprinted from the Report of the Secretary of Commerce; 1939/1940, from Annual report of the Secretary of the Interior
Reports for 1931-1939 called also Administrative report
Report year ends June 30
Merged with: United States. Bureau of Biological Survey. Report of the chief of the Bureau of Biological Survey (1929), to form: U.S. Fish and Wildlife Service. Annual report of the director of the Fish and Wildlife Service to the Secretary of the Interior
Appendices issued also as Progress in biological inquiries